Издательство: "PENSOFT PUBLISHERS"
| Название: | A new record of odd-scaled snake (Serpentes, xenodermidae) from vietnam: Expanded description of parafimbrios vietnamensis based on integrative taxonomy | 
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| Автор ПГУ: | Ермаков Олег Александрович  | |
| Тематика: | биология | |
| Вид ресурса: | электронная копия бумажного издания | |
| Тип ресурса: | Статья | |
| Целевое назначение: | Научное | |
| Целевая аудитория: | Исследователь | |
| Аннотация: | Based on the combination of molecular and morphological data, we herein report the second known finding of the xenodermid snake species Parafimbrios vietnamensis Ziegler, Ngo, Pham, Nguyen, Le & Nguyen, 2018. The male individual was found in the Yen Bai Province of northwestern Vietnam, more than 200 km from the type locality in Lai Chau Province. Genetic divergence between the newly-collected male and the holotype was low (1.7%), and is in agreement with morphological data that supports that they are conspecific. We give a detailed description of the morphological characters and coloration of the new record and provide an expanded diagnosis of P. vietnamensis. Parafimbrios is a poorly-understood genus, and our recent discovery brings the total number of known specimens of the genus to nine, 1/3 of them having been found in Vietnam (one specimen of P. lao and now two specimens of P. vietnamensis). | |
| Дата издания: | 2021 | |
| Дата загрузки: | 12.11.2021 | |
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ИР получен из базы данных "Scopus" автоматически
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| Название: | Biodiversity of testate amoebae in Sphagnum bogs: the dataset from forest-steppe ecotone (Middle Volga Territory, Russia) |
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| Автор ПГУ: | Чернышов Виктор Александрович Есаулов Антон Сергеевич Комаров Александр Александрович | |
| Тематика: | биология | |
| Вид ресурса: | электронная копия бумажного издания | |
| Тип ресурса: | Статья | |
| Целевое назначение: | Научное | |
| Целевая аудитория: | Исследователь | |
| Дата издания: | 2024 | |
| Дата загрузки: | 02.12.2024 | |
| Название: | New records of the anomaly P syndrome in two water frog species (Pelophylax ridibundus and P. Lessonae) in Russia | 
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| Автор ПГУ: | Ермаков Олег Александрович Антон Олегович Иванов Александр Юрьевич | |
| Тематика: | биология | |
| Вид ресурса: | электронная копия бумажного издания | |
| Тип ресурса: | Статья | |
| Целевое назначение: | Научное | |
| Целевая аудитория: | Исследователь | |
| Аннотация: | The "anomaly P" was described in Palearctic water frogs of the genus Pelophylax by Jean Rostand as complex morphological anomalies of water frogs, including polydactyly, brachymely, hind limb oedema, bone outgrowths, spikes, flexions and additional limbs in the inguinal region. In 2016, the anomaly P syndrome was rediscovered in central Russia, confirming the hypothesis concerning its wider distribution. Here, three new records of this syndrome in two species of western Palearctic water frog from Russia are described. | |
| Дата издания: | 2019 | |
| Дата загрузки: | 23.11.2020 | |
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ИР получен из базы данных "Scopus" автоматически
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| Название: | Occurrence of the amphibians in the Volga, Don River basins and adjacent territories (Russia): research in 1996-2020 |
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| Автор ПГУ: | Александр Борисович Ермаков Олег Александрович | |
| Тематика: | биология | |
| Вид ресурса: | электронная копия бумажного издания | |
| Тип ресурса: | Статья | |
| Целевое назначение: | Научное | |
| Целевая аудитория: | Исследователь | |
| Аннотация: | Knowledge about the distribution of living organisms on Earth is very important for many areas of biological science and understanding of the surrounding world. However, much of the existing distributional data are scattered throughout a multitude of sources, such as taxonomic publications, checklists and natural history collections and often, bringing them together is difficult. A very successful attempt to solve this problem is the GBIF project, which allows a huge number of researchers to publish data in one place in a single standard. Our dataset represents a significant addition to the occurrences of amphibians in the Volga, Don riverine basins and adjacent territories. The dataset contains up-to-date information on amphibian occurrences in the Volga river basin and adjacent territories, located for the most part on the Russian plain of European Russia. The dataset is based on our own studies that were conducted in the years 1996-2020. The dataset consists of 5,030 incident records, all linked to geographical coordinates. A total of 13 amphibian species belonging to nine genera and six families have been registered within the studied territory, although the distribution of amphibian species in this region of Russia has not yet been fully studied. This is especially relevant with the spread of cryptic species that can only be identified using molecular genetic research methods. The main purpose of publishing a database is to make our data available in the global biodiversity system to a wide range of users. The data can be used by researchers, as well as helping the authorities to manage their territory more efficiently. | |
| Дата издания: | 2021 | |
| Дата загрузки: | 12.11.2021 | |
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ИР получен из базы данных "Scopus" автоматически
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| Название: | The incidence of the anomaly P syndrome in water frogs (Anura, Ranidae, Pelophylax) from the Middle Volga River (Russia) |
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| Автор ПГУ: | Антон Олегович Спартак Николаевич Ермаков Олег Александрович | |
| Тематика: | биология | |
| Вид ресурса: | электронная копия бумажного издания | |
| Тип ресурса: | Статья | |
| Целевое назначение: | Научное | |
| Целевая аудитория: | Исследователь | |
| Аннотация: | The anomaly P is a widespread morphological anomaly, which occurs in some groups of amphibians, caused by the trematode parasite Strigea robusta (Digenea: Strigeidae). This anomaly has been previously recorded in water frogs of the genus Pelophylax and toads of the genera Bufo and Bufotes. The anomaly P includes symmetrical polydactyly cases as a mild attenuated form of the complex syndrome, which in severe cases includes strong deformations of hindlimbs and forelimbs. Strigea robusta has a complex 3-host life cycle using planorbid mollusks as the first intermediate hosts, amphibian larvae as the second intermediate hosts, and anatid birds as the definitive hosts. Herein, we described new records of the anomaly P syndrome in water frogs of the genus Pelophylax from the northeastern parts of their ranges. Symmetrical polydactyly (as a mild form of the anomaly P syndrome) was found in 30 individuals of three species of water frogs from seven localities: in 25 individuals of P. lessonae from four waterbodies, in four individuals of P. ridibundus from three waterbodies, and one individual of P. esculentus. In Gusevo pond, three individuals of P. lessonae with severe cases of the syndrome were found. This is the first record of the anomaly P in reliably identified hybridogenetic edible frogs (P. esculentus) that have been identified in nature. Additionally, we provided new data about the occurrence of the anomaly P and the prevalence of the trematode S. robusta in mollusks taken from two water bodies where anomalous water frogs were found. | |
| Дата издания: | 2023 | |
| Дата загрузки: | 23.10.2023 | |